Ye Chen began to work hard in the academy to compile books.

Not to mention, the students and teachers in the academy still studied a lot of new knowledge on the basis of Ye Chen.

Of course, there were a lot of mistakes, which gave Ye Chen a lot of opportunities to pretend to be forced.

Ye Chen came from the later generations, and he had learned a lot of knowledge, although he had forgotten it, but when he saw what they had researched, he could recognize it at a glance.

After more than ten days of compilation in the academy, Ye Chen received an urgent message.

"Grandma Bear, the robbery has hit me, look for death." After reading the information, Ye Chen burst out on the spot, startling everyone in the academy.

Ye Chen instructed the people of the academy to transport the books and materials back to Jixian County, and he would continue to compile them when he had time, and at the same time let the students and teachers of the academy continue to study.

"Lord, why are you in such a hurry, what is going on?" Zhang Yi saw that Ye Chen was a little anxious, so he asked.

"Thousands of Koreans have robbed Lelang County." Ye Chen said simply.

"The young master, ****, little Gaoli, actually dares to go wild." When the tiger head heard this, he immediately scolded.

Ye Chen of Lelang County had very few troops there, because it was far away from the princes, and there was basically no war, but he didn't expect Goguryeo to attack them.

I also thought about destroying Goguryeo Ye Chen, but that was after the unification of the world, and I didn't expect them to jump out now.

This time Goguryeo was mainly robbed, robbing a lot of grain and money, and also robbing a lot of other goods, with little loss of personnel, and dozens of people died.

Not to mention the future generations, let's just say that at present, Goguryeo has the courage to attack Ye Chen, which poses a threat to Ye Chen's rear.

The rear is threatened, and it must be destroyed first no matter what.

Ye Chen organized the soldiers of the personal guard battalion, and then sent a letter to Zhang Ning and Zhen Mi, asking them to go back on their own, after all, taking the two of them will use a carriage, Zhang Ning is okay, Zhen Mi is not suitable for long-distance fast horse running.

So Ye Chen asked them to wait there or go back on their own.

I ran all the way and returned to Jixian County a few days later.

"My lord, my subordinates have already sent two thousand soldiers to support Lelang County, so it should be no problem to defend for the time being." As soon as he entered the state pastoral mansion, Guo Jia was already waiting there.

Lelang County originally only had 1,000 defenders, and only 1,000 defenders in a county must be less, but the special geographical location of Lelang County, if it wasn't for the threat of Goguryeo this time, there would be no need to send troops to garrison.

Ye Chen is not here, and Guo Jia can mobilize only a limited number of soldiers and horses, but two thousand men and horses are enough to save the emergency.

"What do you think about this?" Ye Chen asked.

"Lord, Goguryeo's strength is limited, we mainly garrison five thousand soldiers and horses in Lelang County, they will have no chance, if the time is ripe in the future, there is not much pressure from other directions, and they can be destroyed."

Guo Jia's meaning is obvious, Goguryeo only needs to defend, and their current enemies are still Yuan Shao and Cao Cao, so they need to be on guard.

Ye Chen's face was expressionless, he didn't say a word, pondered for a while and said, "Bring the map." ”

Ye Chen has a map of Goguryeo, but there is no detailed map, only a general map, but there is a detailed map of the entire Youzhou.

Goguryeo is south of Jin, Changchun, Jilin, and north of North Korea, and Lelang County is the place of present-day North Korea.

On the Goguryeo side, there is still a large area of barrenness, so Ye Chen only asked people to draw a rough map, and it was not as detailed as Youzhou, to each village.

"Bonghyo, what if I want to capture Goguryeo?" Ye Chen asked.

Ye Chen's tone was flat, and he couldn't guess anything, Guo Jia thought for a while and said.

"My lord, Goguryeo is far away from our core area, and the roads there are difficult to navigate, so there is really no benefit, so what can we do?"

Those who fought Goguryeo had no interests, whether it was wealth or population, it was not worth making a big move, especially now that Yuan Shao was on his side, he could attack them at any time.

So Guo Jia chose not to fight Goguryeo.

Ye Chen completely understood, but he still decided to fight.

"It's a long way to go, but the logistics don't matter to us, it's completely achievable."

In later generations, during the Tang Dynasty, Li Shimin personally led an army of 100,000 and did not defeat Goguryeo, and the problem was the climate and logistics.

With an army of 100,000, the logistical pressure was very high, and the pressure was even greater when it was necessary to mobilize materials from the Central Plains.

However, Ye Chen is different from them, he has a strong sea transportation capacity, and he is directly transported to Lelang County, so that more than 90% of the logistics pressure is solved.

Then there is the influence of local topography, climate and other factors.

"Lord, do you really want to fight Goguryeo?" Guo Jia saw that Ye Chen's determination to fight Goguryeo seemed to be great, so he said.

"Of course, it must be fought, and there can be no threat in our rear." Ye Chen said.

In fact, even if Goguryeo exists, they are not strong in military strength, and they do not dare to really kill Liaodong and other regions, so the strategic threat is not very large.

But Ye Chen still wanted to destroy them, and destroying them was considered from other aspects.

First, in terms of personal plot, Ye Chen came from the later generations, destroyed Goguryeo, and included it in the Chinese territory, which is what he thought.

The second is that Ye Chen wants to establish a base in the Mahan area, a navigation base.

Mahan is the southern part of Lelang County, where the present-day Bangzi Kingdom is located, which is very close to Dongying, and it is very convenient to attack Dongying from that place.

Therefore, not only Goguryeo must be taken, but also the Mahan region.

And now is the best time for Ye Chen to take these two places.

Because Yuan Shao and Cao Cao did not recover their military strength so quickly, and there would not be much war in a short period of time, it was very appropriate to take advantage of this gap to take these two places.

There are many gold and silver mines overseas, and there is huge wealth, and it is impossible for Ye Chen to give up.

If it was just to deal with Goguryeo, Ye Chen didn't need to be in a hurry, but it was related to his great voyage, so he had to take it as soon as possible, because the Liaodong had already been built, and it wouldn't take long to go to sea.

Guo Jia saw that Ye Chen had made up his mind, so he did not continue to persuade him, but helped Ye Chen start planning.

"Lord, it is not difficult to destroy these two places, Ma Han is not difficult, they don't have many troops, we go by sea, let Lelang County cooperate, and attack from the north and south, it will not take a month, but Goguryeo is different, the road there is difficult, and we are not familiar with it, I am afraid we must prepare for long-term operations." Guo Jia said.

"After taking Mahan, we use this as a base, we can slowly infiltrate, don't worry, blockade Goguryeo, and slowly they won't be able to hold on."

Ye Chen's attack on Goguryeo, in fact, the biggest reason was for the Mahan region.

Goguryeo doesn't have much value at the moment, but Ma Han has been very, very important since Ye Chen's plan to sail greatly.

The plan has been decided, Ye Chen plans to let Tai Shici fight, because his infantry is the most suitable, the cavalry in these places is not very useful, and the infantry has just been equipped with bows and crossbows, which is just a great power.

(End of chapter)